jobs is in san francisco at the macworld conference in full pitchman mode as he unveils his latest product to the faithful. >> these are not three separate devices. this is one device. [cheers and applause] and we are calling it iphone. >> it is not only a remarkable achievement but a validation of everything that jobs believed in: if you made and controlled all of your own hardware and all of your own software, you could integrate all of your products and all of your content seamlessly into one digital hub. and no one but steve jobs had thought of it. >> this is something microsoft couldn't do 'cause it made software but not the hardware. it's something sony couldn't do 'cause it made a lot of devices, but it didn't really make software operating systems. and so the only company that had end-to-end control was apple. >> biographer walter isaacson writes that jobs had created a walled garden. if you wanted to use any of his products, it was easier to buy into the whole apple ecosystem. it was something only a complete control freak could have pulled off. his personality, passions, products